A DESCRIPTION OF THE PROBLEM :
Scanner throws weird Exception:
Exception in thread "Thread-2" java.lang.IndexOutOfBoundsException: end
at java.base/java.util.regex.Matcher.region(Matcher.java:1514)
at java.base/java.util.Scanner.findPatternInBuffer(Scanner.java:1089)
at java.base/java.util.Scanner.findWithinHorizon(Scanner.java:1791)
at java.base/java.util.Scanner.nextLine(Scanner.java:1649)
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Ask an Input for Scanner::nextLine in a while loop with System.in
Press enter, enter client then press enter, exit then press enter, press 2X enter.
I's rare.


FREQUENCY : rarely